Needle bar or cylinder for knitting-machines



(No Model.) I L. N. D. WILLIAMS.

NEEDLE BAR OR CYLINDER FOR KNITTING MACHINES. No, 561,038.

Patented Ma 26, 1896.

FIG 1 Witnesses, WM W/f &Zr/v/% by his flak 3074 98 UNITED STATES PATENT OFFICE.

LOUIS N. D. IVILLIAMS, OF ASHBOURNE, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO ROBERT WV. SCOTT, OF PHILADELPHIA, PENNSYLVANIA.

NEEDLE BAR OR CYLINDER FOR KNITTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 561,038, dated May 26, 1896.

Application fil d March 27, 1896'. Serial No. 585,118. (No model.)

T at whom it may concern: of the same upon the bases of the grooves Be it known that I, LOUIS N. D. IVILLIAMS, formed in the needle bar or cylinder. Hence a citizen of the United States, and a resident any inaccuracy in the latter cannot affectthe of Ashbourne, Montgomery county, Pennsyltrue adjustment and support of the sheet- 5 Vania, have invented certain Improvements metalv strips.

in Needle Bars or Cylinders for Knitting-Ma- In the construction shown in the drawings chines, of which the following is a specificathe cylinder is composed of three partstion. namely, the top A, body B, and base-ring D,

My invention relates to that class of knitsuitably secured together by set-screws a and to ting-machine bars or cylinders in which the b, the body B having formed in its outerface ribs or partitions separating the needlethe grooves for the reception of the sheetgrooves are formed by means of independent metal strips F, which constitute the ribs or pieces or strips of sheet metal, the object of partitions between the needle-grooves. Each my invention being to so construct such a of these strips F, however, instead of having 15 needle bar or cylinder as to provide for the its sole rear bearing against the base of the true and accurate adjustment and support of groove formed in the body B of the cylinder said ribs or partitions. This object I attain has at the top an inner bearing-face (Z and at in the manner hereinafter set forth, reference the bottom an inner bearing-face f, the face being had to the accompanying drawings, in d seating against a shoulder formed by means 20 which of arib '6, projecting downwardly from the top Figure 1 represents a vertical section of plate A of the cylinder and the bearing-face part of a needle-cylinder for knitting-ma f at the bottom of the strip seating against chines constructed in accordance with my inthe front of the base-ring D. The under side vention. Fig. 2 is a sectional plan view of of the rib t' and the upper side of the project- 25 the same on the line 2 2, Fig. 1. Fig. 3 is a ing portion of the base-ring D are beveled, detached View of one of the ribs or partitionas shown in Fig. 1, and the rear portion of strips, and Fig. 4 is a vertical section illuseach strip F is likewise beveled at top and trat-ing another embodiment of my invention. bottom for the reception of these beveled por- Ordinary needle cylinders or bars are tions of the top and base-ring of the cylinder, 0 formed by slotting or grooving the metal of so that when the various parts of the cylinder which the bar or cylinder is composed, so as are properly assembled and secured together to form therein channels for the reception the strips F are not only rigidly confined to and guidance of the needles; but irrespective the cylinder in avertical plane, but they are of its expense this is an unsatisfactory also drawn inward by the beveled portions of 35 method, because the metal of which the cylthe top A and base D. Hence the upper and inder or bar is composed varies in hardness lower bearing-faces d and f of each strip are and thus leads to inaccuracy in the cutting seated firmly upon the front of the rib i and and unequal wear in use. It has been probase D, respectively, the grooves in the body posed to overcome these objections by pro- B of the cylinder being preferably cut so deep 0 o viding the bar or cylinder with strips of sheet that the inner edge of each strip F will touch metal let into grooves in said bar or cylinder the base of each groove but lightly, if at all. and suitably confined thereto, these strips As each of the strips F is accurately formed constituting the ribs or partitions which sepaand as the bearing-surfaces of the top and base rate the needle-grooves one from another; of the cylinder can be likewise accurately 5 5 but in this case also the separate strips rely formed by turning, or, in the case of a straight for their accuracy largely upon the accurate bar, by planing, it follows that accurate adcutting of the cylinder and hence do not fully justment and support of the strips F are proattain the object for which they are intended. Vided for irrespective of the accuracy of the In carrying out my invention, therefore, I grooves formed in the bodyB of thecylinder. I00 50 provide for the support of the sheet-metal Hence the objections to former needle cylinstrips or bars independently of any seating ders or bars having independent partitionstrips are eii'eetually overcome. Although I prefer to make the top A and base D both separate from the body B of the cylinder, as shown, one or other of these parts may be formed in one piece with the cylinder, as desired, without departing from my invention, and the means adopted for securing the parts together may also be modified in various ways within the knowledge of the mechanic.

The strips F (shown in Figs. 1 and 3) have their upper and lower bearing-faces d and f in planes in advance of the rear edge of the strip; but this is not necessary to the proper carrying out of my invention, as said upper and lower bearing-faces may be in the same plane as said rear edge, as shown, for in stance, at cl and f in Fig. 4, the top A and base-ring D being properly constructed to form bearings for these faces.

Having thus described my invention, I claim and desire to secure by Letters Patentl. A needle bar or cylinder for knittingmaehines having strips or bars of sheet metal let into grooves in the same, said strips having inner bearings upon portions of the cylinder other than the bases of the grooves, substantially as specified.

2. A lniitting-niachine needle bar or cylinder having sheet-metal bars or strips let into grooves therein, said bar or cylinder having, above and below its grooved portion, shoulders presenting true faces serving as seats for inner bearing-faces formed upon the strips, said shoulders and bearin g-faces being so disposed in respect to the grooves and to the backs of the strips that the latter are not firmly seated upon the bottoms of the grooves, substantially as specified.

3. A knitting-machine needle bar or cylinder having strips or bars of sheet metal. let into grooves therein, said bar or cylinder having, above and below the grooved portion, shoulders presenting beveled faces for engagement with correspondingly-beveled portions of the strips, and seats for inner bearing-faces formed upon the strips, said shoulders and bearing-faces being so disposed in respect to the grooves and to the backs of the strips that the latter are not firmly seated upon the bottoms of the grooves, substantially as specified.

4:. A knitting-machine needle bar or cylinder having sheet-metal strips let into grooves therein, said bar or cylinder having also upper and lower detachable portions presenting shoulders which form seats for inner bearingfaces formed upon the sheet-m etal strips, said shoulders and bearin g-i'aces being so disposed in respect to the grooves and to the backs of the strips that the latter are not firmly seated upon the bottoms of the grooves, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS N. D. \VILLIAMS.

\Vitnesses:

J 0s. 11. KLEIN, FRANK E. BEcnToLD. 

